Answer: A. Increasingly crowded urban areas
Explanation: Think about it this way. If you heard about more products being made in a city that means what? More jobs! Many people moved to cities and then made the cities unsanitary and many diseases spread around such as hepatitis. Anyways the more jobs there was the more money people could make and the more people lived in big cities like New York.
It would have effects on humans because it would Create widespread beach and cliff erosion, damaging coastal property and infrastructure. Make flood insurance unaffordable and unviable. Lead to salt-water intrusion in coastal aquifers, accelerating corrosion of waste- and storm-water drainage systems and affecting water quality and water resources.
The answer is A. Sorry if i'm wrong.
Similarities:
- Marine and freshwater ecosystems are water, covering almost 75 percent of the earth's surface.
-The most pervasive problem affecting both freshwater and marine ecosystems is pollution.
-The process of regulating the osmotic pressure on fluids inside an organism is essential to all freshwater and marine species.
Differences:
- Marine ecosystems are more diverse than freshwater ones.
- In marine or seawater, the salinity level, or the concentration of salt is greater, but freshwater is not totally void of it.
- Only 1% of the whole water body on the earth is freshwater, the other 99% is marine water.
Note- I couldn't come up with ones for estuaries, sorry.
Organisms can be either producers or consumers in terms of energy flow throughan ecosystem. and actually it says we get 5 points soooo...